Hitachi MK-96RD617-08 - Manual (Page 111)

Performance Monitor Operations 5-29
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User’s Guide
I/O rate for parity groups or external volume groups (When the Box 1
folder is selected):
I/O rate for volumes:
Figure 5-13 I/O Rates for Disks
Notes:
• It is possible that the I/O rate for a parity group or an external volume
group is not equal to the sum of the I/O rate for each volume in that
group. This is because the Performance Management window omits
fractions below the decimal point when displaying the I/O rate for each
volume.
• If there is no volume in a parity group, hyphens (-) are displayed in
place of performance statistics on a parity group.
• If the CU is not the monitoring target, all items in the row are displayed
in italics. If you want to monitor those items, specify the CU as the
monitoring target by using the Monitoring Option window.
The list displays the following:
• : When the green checkmark icon is displayed on the left of an item,
the graph displays workload statistics about the parity group, the external
volume group, or the volume.
• PG: Indicates the parity group ID or the external volume group ID. If the
ID starts with the letter "E", the group is an external volume group. If the
ID starts with the letter "V" or "X", the group is a V-VOL group.
• LDEV: Indicates the volume ID. If the ID ends with the pound or gate
symbol (#), the volume is an external volume. If the ID ends with the
symbol "V" or "X", the volume is a virtual volume.
• Emulation: Indicates the emulation type.
• IO Rate: Indicates the number of I/O requests to the parity group, the
external volume group, or the volume per second.